-40.13% is the change from 917 to 549
Calculation steps:
[( 549 - 917 ) ÷ 917] x 100 = -40.13%
Formula
Percentage change = [(549 - 917) / 917] x 100
Subtract the new number by the original number
549 - 917 = -368
-368 ÷ 917 = -0.40130861504907306
-0.40130861504907306 x 100 = -40.13%